Ask Kevin Durant
Here's the bigger question: Does Kevin Durant still want Scott Brooks to be the coach?
If the answer is yes, then Oklahoma City will sign Brooks to an extension. Why is it taking so long? The Thunder likely don't want to commit to him for more than two more years in case playoff results dictate the hiring of a new voice.
The moves the Thunder need to make next are finding another shooter and an offensive threat at center before fiddling with the coach.
No need to force change
Well, if Phil Jackson wants to come out of retirement, of course you consider someone better than Scott Brooks.
Short of that, you stick with Brooks. Perhaps he isn't the best X's and O's coach in the world. But his players respect him and they play hard for him.
Young coaches can get better. In particular, the Thunder need to improve on the offensive end, where they tend to be predictable and stagnant at times.
Brooks has guided his team to the conference and NBA Finals in back-to-back seasons. He certainly seems like the type of young coach who puts the work in to improve. There's no need to force change at a time when the franchise is going well.